{"id":3001,"date":"2025-07-08T14:06:00","date_gmt":"2025-07-08T12:06:00","guid":{"rendered":"https:\/\/octodeep.com\/blog\/?p=3001"},"modified":"2025-08-18T11:36:12","modified_gmt":"2025-08-18T09:36:12","slug":"nova-uroven-kvality-a-presnosti-ai-obrazku-s-imagen-4","status":"publish","type":"post","link":"https:\/\/octodeep.com\/blog\/nova-uroven-kvality-a-presnosti-ai-obrazku-s-imagen-4\/","title":{"rendered":"Nov\u00e1 \u00farove\u0148 kvality a p\u0159esnosti AI obr\u00e1zk\u016f s Imagen 4"},"content":{"rendered":"\n

Nach\u00e1z\u00edme se v dob\u011b, kdy k vytvo\u0159en\u00ed p\u016fsobiv\u00e9ho vizu\u00e1lu nepot\u0159ebujeme nic jin\u00e9ho ne\u017e my\u0161lenku a dob\u0159e formulovan\u00fd prompt<\/a>. Generativn\u00ed um\u011bl\u00e1 inteligence<\/a> m\u011bn\u00ed sv\u011bt vizu\u00e1ln\u00ed tvorby stejn\u011b radik\u00e1ln\u011b<\/strong>, jako kdysi fotografie nahradila malbu v portr\u00e9tn\u00ed tvorb\u011b<\/strong>. A pr\u00e1v\u011b Imagen<\/a> 4<\/strong> od Google DeepMind je jedn\u00edm z nejpokro\u010dilej\u0161\u00edch model\u016f, kter\u00e9 sv\u011bt AI vizu\u00e1ln\u00ed tvorby m\u016f\u017ee nab\u00eddnout. <\/p>\n\n\n\n

Imagen 4<\/strong> dok\u00e1\u017ee vytv\u00e1\u0159et realistick\u00e9 i fantazijn\u00ed obr\u00e1zky<\/strong> d\u00edky sv\u00e9 schopnosti interpretovat slo\u017eit\u00e9 popisy, p\u0159irozen\u00fd jazyk a prostorovou logiku. M\u016f\u017eete si nechat vytvo\u0159it sn\u00edmek ve stylu sci-fi filmu, nostalgickou ilustraci z 80. let nebo hyperrealistick\u00fd portr\u00e9t imagin\u00e1rn\u00edho \u010dlov\u011bka. A to v\u0161echno b\u011bhem n\u011bkolika vte\u0159in.<\/p>\n\n\n\n

Tvorba obr\u00e1zk\u016f pomoc\u00ed um\u011bl\u00e9 inteligence<\/a> se st\u00e1v\u00e1 dostupnou nejen pro profesion\u00e1ly, ale pro ka\u017ed\u00e9ho, kdo chce vizualizovat n\u00e1pad, n\u00e1vrh, nebo jen zkoumat hranice p\u0159edstavivosti<\/strong>. Imagen 4 je n\u00e1stroj, kter\u00fd ukazuje, kam a\u017e se sou\u010dasn\u00e1 AI technologie<\/a> dostala.<\/p>\n\n\n\n

Imagen 4 m\u016f\u017eete vyzkou\u0161et i v <\/strong>OCTODEEP<\/strong><\/a>, kde si nav\u00edc snadno porovn\u00e1te v\u00fdstupy s dal\u0161\u00edmi 15+ modely<\/a>. <\/p>\n\n\n\n

\"Octodeep<\/a><\/figure>\n\n\n\n

Seznamte se s Imagenem 4 od Google DeepMind<\/h2>\n\n\n\n

Imagen 4<\/strong> je nejnov\u011bj\u0161\u00ed generac\u00ed text-to-image<\/em> modelu<\/a> od Googlu<\/strong>, vyvinut\u00e9ho spole\u010dnost\u00ed DeepMind. V porovn\u00e1n\u00ed se sv\u00fdmi p\u0159edch\u016fdci p\u0159in\u00e1\u0161\u00ed razantn\u00ed skok vp\u0159ed, a to nejen v kvalit\u011b v\u00fdstup\u016f, ale i ve schopnosti porozum\u011bt slo\u017eit\u00fdm prompt\u016fm, prostorov\u00fdm vztah\u016fm a jemn\u00fdm v\u00fdznamov\u00fdm nuanc\u00edm v p\u0159irozen\u00e9m jazyce<\/strong>. Model si porad\u00ed s perspektivou, nasv\u00edcen\u00edm, konzistenc\u00ed postav i slo\u017eit\u011bj\u0161\u00edmi po\u017eadavky, kter\u00e9 jin\u00fdm gener\u00e1tor\u016fm \u010dasto d\u011blaj\u00ed probl\u00e9m<\/strong> (nap\u0159. po\u010det prst\u016f, n\u00e1pisy, symetrie nebo komplexn\u00ed sc\u00e9ny). <\/p>\n\n\n\n

Za \u00fasp\u011bchem Imagenu<\/a> stoj\u00ed kombinace pokro\u010dil\u00e9ho strojov\u00e9ho u\u010den\u00ed<\/a>, rozs\u00e1hl\u00fdch tr\u00e9ninkov\u00fdch dat a propojen\u00ed s jazykov\u00fdm modelem Gemini<\/a> 1.5<\/strong>, kter\u00fd d\u00edky princip\u016fm Retrieval-Augmented Generation<\/a> (RAG<\/a>) umo\u017e\u0148uje hlub\u0161\u00ed porozum\u011bn\u00ed v\u00fdznamu zad\u00e1n\u00ed skrze p\u0159\u00edstup k relevantn\u00edm informac\u00edm v re\u00e1ln\u00e9m \u010dase<\/strong>. V\u00fdsledkem je n\u00e1stroj, kter\u00fd nejen \u201ekresl\u00ed <\/em>podle zad\u00e1n\u00ed\u201c, ale skute\u010dn\u011b \u201evytv\u00e1\u0159\u00ed<\/em> na z\u00e1klad\u011b pochopen\u00ed,\u201c a to s ohledem na kontext, styl i konkr\u00e9tn\u00ed znalosti.<\/strong><\/p>\n\n\n\n

Co um\u00ed Imagen 4 <\/h2>\n\n\n\n

Imagen 4 p\u0159edstavuje v\u00fdznamn\u00fd posun v kvalit\u011b generovan\u00fdch obr\u00e1zk\u016f, a to jak po estetick\u00e9 str\u00e1nce, tak v\u011brnosti zad\u00e1n\u00ed. Obr\u00e1zky jsou detailn\u011bj\u0161\u00ed, p\u0159irozen\u011bj\u0161\u00ed a \u010dasto a\u017e fotograficky realistick\u00e9. D\u00edky roz\u0161\u00ed\u0159en\u00e9mu tr\u00e9ninku a optimalizovan\u00fdm algoritm\u016fm si Imagen 4 l\u00e9pe porad\u00ed s n\u00e1ro\u010dn\u00fdmi po\u017eadavky<\/strong>, zvl\u00e1d\u00e1 komplexn\u00ed kompozice, v\u00edcero postav, re\u00e1ln\u00e9 proporce, p\u0159esn\u00e9 vykreslen\u00ed rukou \u010di objekt\u016f v perspektiv\u011b<\/strong>. <\/p>\n\n\n\n

Fotorealistick\u00e1 kvalita na prvn\u00ed pohled<\/strong><\/h3>\n\n\n\n

D\u00edky vylep\u0161en\u00e9 architektu\u0159e dok\u00e1\u017ee Imagen 4 generovat obr\u00e1zky, kter\u00e9 vypadaj\u00ed jako fotografie s realistick\u00fdm sv\u011btlem, st\u00edny, detaily pleti, materi\u00e1l\u016f nebo textur. A\u0165 u\u017e jde o portr\u00e9t, p\u0159\u00edrodn\u00ed krajinu nebo produktovou fotografii, v\u00fdstupy p\u016fsob\u00ed p\u0159irozen\u011b a profesion\u00e1ln\u011b. <\/p>\n\n\n\n

Lep\u0161\u00ed porozum\u011bn\u00ed zad\u00e1n\u00ed d\u00edky propojen\u00ed s Gemini <\/strong><\/h3>\n\n\n\n

S\u00edla Imagen 4 spo\u010d\u00edv\u00e1 ve spojen\u00ed s jazykov\u00fdm modelem Gemini 1.5<\/a>. Ten analyzuje v\u00e1\u0161 prompt do hloubky, rozpozn\u00e1 v\u00fdznamov\u00e9 nuance, kontext i n\u00e1ladu. V\u00fdsledkem je obraz, kter\u00fd nejen „sed\u00ed“ na popis, ale p\u0159esn\u011b odpov\u00edd\u00e1 i zam\u00fd\u0161len\u00e9mu stylu nebo atmosf\u00e9\u0159e.<\/p>\n\n\n\n

Nap\u0159\u00edklad p\u0159i zad\u00e1n\u00ed promptu<\/a><\/strong>: \u201eMl\u017en\u00e9 r\u00e1no ve star\u00e9m japonsk\u00e9m m\u011bst\u011b, detailn\u00ed kamenn\u00e9 dla\u017edice, jemn\u00e9 sv\u011btlo, bez lid\u00ed.“ <\/em> Imagen 4 nejen vizu\u00e1ln\u011b vykresl\u00ed m\u011bsto, ale zachyt\u00ed i jeho klidnou atmosf\u00e9ru.<\/p>\n\n\n\n

\"Obr\u00e1zek<\/a>
Zdroj: OCTODEEP<\/a>
Obr\u00e1zek<\/a> vygenerovan\u00fd v modelu Imagen 4 p\u0159es aplikaci OCTODEEP. <\/figcaption><\/figure>\n\n\n\n

Pokro\u010dil\u00e1 pr\u00e1ce s detaily a slo\u017eit\u00fdmi sc\u00e9nami<\/strong><\/h3>\n\n\n\n

Z\u00e1sadn\u011b se zlep\u0161ilo vykreslov\u00e1n\u00ed komplexn\u00edch prvk\u016f, jako jsou ruce, perspektiva, mno\u017estv\u00ed objekt\u016f nebo vrstven\u00e9 kompozice<\/strong>. Imagen 4 zvl\u00e1d\u00e1 slo\u017eit\u00e9 v\u00fdjevy, kter\u00e9 byly d\u0159\u00edve pro AI n\u00e1ro\u010dn\u00e9<\/strong>, nap\u0159\u00edklad skupiny lid\u00ed, zrcadla, p\u0159irozen\u00e9 p\u00f3zy nebo interakce mezi objekty.<\/strong><\/p>\n\n\n\n

Prompt: \u201e<\/em><\/strong>Fotorealistick\u00e1 sc\u00e9na \u017eeny sed\u00edc\u00ed o samot\u011b ve vintage francouzsk\u00e9 kav\u00e1rn\u011b. M\u00e1 na sob\u011b jemn\u00fd b\u00e9\u017eov\u00fd tren\u010dkot a ob\u011bma rukama dr\u017e\u00ed porcel\u00e1nov\u00fd \u0161\u00e1lek k\u00e1vy. Za n\u00ed vis\u00ed zdoben\u00e9 n\u00e1st\u011bnn\u00e9 zrcadlo, kter\u00e9 odr\u00e1\u017e\u00ed jej\u00ed jemn\u00e9 dr\u017een\u00ed t\u011bla a tepl\u00fd interi\u00e9r. Jej\u00ed ruce a prsty jsou detailn\u011b a p\u0159irozen\u011b vyobrazen\u00e9. Kav\u00e1rna je vybavena d\u0159ev\u011bn\u00fdmi \u017eidlemi, mal\u00fdmi kulat\u00fdmi mramorov\u00fdmi stolky, staro\u017eitn\u00fdmi n\u00e1st\u011bnn\u00fdmi sv\u00edcny a zlatav\u00e9 odpoledn\u00ed sv\u011btlo vrh\u00e1 m\u011bkk\u00e9 st\u00edny po podlaze. D\u016fraz je kladen na jemn\u00e9 textury, z\u00e1hyby l\u00e1tky, dr\u017een\u00ed rukou a p\u0159esnost odrazu.“<\/em><\/p>\n\n\n\n

\"Obr\u00e1zek<\/a>
Zdroj: OCTODEEP<\/a>
Obr\u00e1zek vygenerovan\u00fd v aplikaci OCTODEEP pomoc\u00ed modelu Imagen 4 ukazuje jak model zvl\u00e1d\u00e1 precizn\u011b generovat ruce a odrazy v zrcadle. <\/figcaption><\/figure>\n\n\n\n

M\u00e9n\u011b chyb, v\u00edce konzistence<\/strong><\/h3>\n\n\n\n

D\u00edky rozs\u00e1hlej\u0161\u00ed tr\u00e9ninkov\u00e9 sad\u011b a d\u016fsledn\u00e9mu dolad\u011bn\u00ed je v\u00fdstup m\u00e9n\u011b n\u00e1chyln\u00fd k chyb\u00e1m. Nep\u0159esnosti v po\u010dtech prst\u016f, textu<\/a> nebo symetrii jsou u Imagen 4 v\u00fdrazn\u011b vz\u00e1cn\u011bj\u0161\u00ed ne\u017e u p\u0159edchoz\u00edch gener\u00e1tor\u016f.<\/strong><\/p>\n\n\n\n

\n
\n \ud83d\udc19<\/span>\n TIP:<\/strong>\n <\/div>\n

Imagen 4 <\/strong> si m\u016f\u017eete vyzkou\u0161et i v OCTODEEP! <\/strong>\n\nU\u017e v tarifu STARTER <\/strong> z\u00edsk\u00e1te p\u0159\u00edstup k tomuto pokro\u010dil\u00e9mu gener\u00e1toru obr\u00e1zk\u016f spolu s des\u00edtkami dal\u0161\u00edch model\u016f. Sta\u010d\u00ed napsat jeden prompt a b\u011bhem vte\u0159in m\u016f\u017eete porovnat r\u016fzn\u00e9 v\u00fdstupy. \n <\/div>\n <\/strong>\n<\/div>\n\n\n\n

V \u010dem Imagen 4 od Googlu vynik\u00e1 nad ostatn\u00edmi gener\u00e1tory? <\/h2>\n\n\n\n

Na trhu AI gener\u00e1tor\u016f obr\u00e1zk\u016f dnes najdeme \u0159adu n\u00e1stroj\u016f<\/a>. Mezi nejzn\u00e1m\u011bj\u0161\u00ed pat\u0159\u00ed DALL\u00b7E 3 a GPT-1 Image od OpenAI<\/a> nebo open-source platforma Stable Diffusion<\/a> XL. V\u0161echny dok\u00e1\u017e\u00ed vytv\u00e1\u0159et p\u016fsobiv\u00e9 vizu\u00e1ly, ale ka\u017ed\u00fd p\u0159istupuje ke generov\u00e1n\u00ed jinak. Jak si tedy Imagen 4 stoj\u00ed?<\/p>\n\n\n\n

Jedn\u00edm z hlavn\u00edch d\u016fvod\u016f, pro\u010d Imagen 4<\/strong> vynik\u00e1, je jeho napojen\u00ed na jazykov\u00fd model Gemini 1.5<\/strong>, kter\u00fd funguje na pokro\u010dil\u00e9m strojov\u00e9m u\u010den\u00ed s vyu\u017eit\u00edm princip\u016f RAG. D\u00edky tomu rozum\u00ed zadan\u00fdm text\u016fm opravdu do hloubky, a to nejen co se t\u00fd\u010de fakt\u016f, ale i nuanc\u00ed, kulturn\u00edch kontext\u016f nebo jemn\u00fdch stylistick\u00fdch odkaz\u016f<\/strong>. <\/p>\n\n\n\n

Promptu<\/strong>: \u201eStar\u0161\u00ed mu\u017e na proch\u00e1zce se psem v m\u011bstsk\u00e9m parku b\u011bhem podzimn\u00edho odpoledne. M\u00e1 na sob\u011b vln\u011bn\u00fd kab\u00e1t, kulicha a dr\u017e\u00ed vod\u00edtko, zat\u00edmco pes \u2013 zlat\u00fd retr\u00edvr \u2013 sk\u00e1\u010de do hromady spadan\u00e9ho list\u00ed. V d\u00e1lce je vid\u011bt klidn\u00e9 jezero a jeho odraz se zrcadl\u00ed na hladin\u011b. Na lavi\u010dce sed\u00ed p\u00e1r \u010dtouc\u00ed si noviny. Styl: hyperrealistick\u00fd, m\u011bkk\u00e9 p\u0159irozen\u00e9 sv\u011btlo, d\u016fraz na detaily (ruce, srst psa, list\u00ed, odrazy).\u201c<\/em><\/p>\n\n\n\n

\"Obr\u00e1zek<\/a>
Zdroj: OCTODEEP<\/a>
Obr\u00e1zek vygenerovan\u00fd v aplikaci OCTODEEP pomoc\u00ed modelu Imagen 4.<\/figcaption><\/figure>\n\n\n\n

DALL\u00b7E 3<\/strong> m\u00e1 podobn\u011b siln\u00e9 z\u00e1zem\u00ed, d\u00edky jeho propojen\u00ed s GPT-4<\/a>, av\u0161ak jeho schopnost pr\u00e1ce s jazykem b\u00fdv\u00e1 o n\u011bco m\u00e9n\u011b p\u0159esn\u00e1, zejm\u00e9na mimo angli\u010dtinu<\/strong>. <\/p>\n\n\n\n

GPT-1 Image<\/strong> si vede dob\u0159e v rychlosti a jednoduchosti pou\u017eit\u00ed<\/strong>, ale u slo\u017eit\u011bj\u0161\u00edch sc\u00e9n m\u016f\u017ee pokulh\u00e1vat jeho pochopen\u00ed v\u00fdznamu zad\u00e1n\u00ed<\/strong>.<\/p>\n\n\n\n

Stable Diffusion XL<\/strong> m\u00e1 tendenci fungovat dob\u0159e u stylizovan\u00fdch obr\u00e1zk\u016f, ale bez technick\u00e9ho lad\u011bn\u00ed a vlastn\u00edch checkpoint\u016f m\u016f\u017ee b\u00fdt v\u00fdstup m\u00e9n\u011b konzistentn\u00ed.<\/p>\n\n\n\n

Co se t\u00fd\u010de technick\u00e9 p\u0159esnosti v\u00fdstupu, Imagen 4 se op\u011bt dr\u017e\u00ed v \u010dele<\/strong>. V\u00fdrazn\u011b pokro\u010dil v generov\u00e1n\u00ed prvk\u016f se kter\u00fdmi m\u00e1 v\u011bt\u0161ina AI n\u00e1stroj\u016f<\/a> probl\u00e9my<\/strong> (nap\u0159. ruce, zrcadla, realistick\u00e9 skupiny lid\u00ed).<\/p>\n\n\n\n

U DALL-E<\/a> 3 je viditeln\u00e9 zlep\u0161en\u00ed oproti p\u0159edchoz\u00edm verz\u00edm, ale st\u00e1le se objevuj\u00ed chyby u slo\u017eit\u011bj\u0161\u00edch kompozic nebo postav.<\/strong> <\/p>\n\n\n\n

Obr\u00e1zek vygenerovan\u00fd v DALL-E 3 podle stejn\u00e9ho promptu, kter\u00fd je uveden\u00fd v\u00fd\u0161e:<\/p>\n\n\n\n

\"Obr\u00e1zek<\/a>
Zdroj: OCTODEEP<\/a>
Obr\u00e1zek vygenerovan\u00fd v DALL-E 3 v aplikaci OCTODEEP.<\/figcaption><\/figure>\n\n\n\n

GPT-1 Image zvl\u00e1d\u00e1 velmi dob\u0159e jednoduch\u00e9 sc\u00e9ny s jedn\u00edm objektem, av\u0161ak u komplexn\u011bj\u0161\u00edch obraz\u016f m\u016f\u017ee doj\u00edt ke zkreslen\u00ed<\/strong>. <\/p>\n\n\n\n

Obr\u00e1zek vygenerovan\u00fd v GPT-1 Image podle stejn\u00e9ho promptu, kter\u00fd je uveden\u00fd v\u00fd\u0161e:<\/p>\n\n\n\n

\"Obr\u00e1zek<\/a>
Zdroj: OCTODEEP<\/a>
Obr\u00e1zek vygenerovan\u00fd v GPT 1 Image<\/a> v aplikaci OCTODEEP.<\/figcaption><\/figure>\n\n\n\n

U Stable Diffusion XL pak z\u00e1vis\u00ed p\u0159edev\u0161\u00edm na konkr\u00e9tn\u00ed \u00faprav\u011b a pou\u017eit\u00ed. Je vhodn\u00fd sp\u00ed\u0161e pro pokro\u010dilej\u0161\u00ed u\u017eivatele<\/strong>, kte\u0159\u00ed v\u00ed jak vyu\u017e\u00edt pln\u00fd potenci\u00e1l tohoto grafick\u00e9ho modelu. Pro b\u011b\u017en\u00e9ho u\u017eivatele b\u00fdv\u00e1 tento n\u00e1stroj m\u00e9n\u011b stabiln\u00ed<\/strong>.<\/p>\n\n\n\n

Obr\u00e1zek vygenerovan\u00fd v modelu Stable Diffusion XL podle stejn\u00e9ho promptu, kter\u00fd je uveden\u00fd v\u00fd\u0161e:<\/p>\n\n\n\n

\"Obr\u00e1zek<\/a>
Zdroj: OCTODEEP<\/a>
Obr\u00e1zek vygenerovan\u00fd ve Stable Diffusion XL p\u0159es aplikaci OCTODEEP.<\/figcaption><\/figure>\n\n\n\n

V ot\u00e1zce stylov\u00e9 flexibility<\/strong> nab\u00edz\u00ed Imagen 4 skute\u010dn\u011b \u0161irokou paletu, dok\u00e1\u017ee generovat v\u0161e od realistick\u00fdch fotografi\u00ed p\u0159es ilustraci a\u017e po experiment\u00e1ln\u00ed v\u00fdtvarn\u00e9 styly<\/strong>. Ovl\u00e1d\u00e1n\u00ed sv\u011btla, barev i n\u00e1lady sc\u00e9ny je plynul\u00e9 a p\u0159esn\u00e9<\/strong>. <\/p>\n\n\n\n

DALL\u00b7E 3 vynik\u00e1 v kreativn\u00edch a kreslen\u00fdch stylech<\/strong>, co\u017e ho \u010din\u00ed ide\u00e1ln\u00edm pro komer\u010dn\u011b lad\u011bn\u00e9 v\u00fdstupy, jako jsou t\u0159eba produktov\u00e9 fotografie. <\/p>\n\n\n\n

Prompt: <\/strong>\u201e<\/em>Vysoce kvalitn\u00ed produktov\u00e1 fotografie jemn\u00e9ho zlat\u00e9ho prstenu s mal\u00fdm smaragdov\u00fdm kamenem, vystaven\u00e9ho na m\u011bkk\u00e9m sametov\u00e9m pol\u0161t\u00e1\u0159ku v b\u00e9\u017eov\u00e9m odst\u00ednu. Pozad\u00ed je minimalistick\u00e9 a jemn\u011b nasv\u00edcen\u00e9, s malou hloubkou ostrosti, kter\u00e1 rozmaz\u00e1v\u00e1 okraje. P\u0159irozen\u00e9 sv\u011btlo zv\u00fdraz\u0148uje texturu kovu a fazety smaragdu. Prsten je dokonale vyst\u0159ed\u011bn\u00fd, zachycen\u00fd ve 4K rozli\u0161en\u00ed, s \u010distou redak\u010dn\u00ed estetikou vhodnou pro katalogy luxusn\u00edch \u0161perk\u016f.<\/em>„<\/p>\n\n\n\n

\"Produktov\u00e1
Zdroj: OCTODEEP<\/a>
Produktov\u00e1 fotografie vygenerovan\u00e1 v modelu DALL-E 3.<\/figcaption><\/figure>\n\n\n\n

GPT\u20131 Image je dobrou volbou pro v\u011bt\u0161inu v\u00fdstup\u016f<\/strong>, nicm\u00e9n\u011b nenab\u00edz\u00ed takovou variabilitu <\/strong>a spolehlivost jako Imagen 4.<\/p>\n\n\n\n

Stable Diffusion XL je velmi siln\u00fd v oblasti stylizace, zejm\u00e9na pokud model vyu\u017e\u00edv\u00e1 pokro\u010dil\u00e9 mo\u017enosti jako je LoRA nebo vlastn\u00ed tr\u00e9nink<\/strong>. <\/p>\n\n\n\n

\n
\n \ud83d\udc19<\/span>\n TIP:<\/strong>\n <\/div>\n

V aplikaci OCTODEEP <\/strong> si m\u016f\u017eete v\u0161echny vyzkou\u0161et v\u0161echny zm\u00edn\u011bn\u00e9 modely i n\u011bjak\u00e9 dal\u0161\u00ed, jako je Grok<\/a> nebo Photon, na jednom m\u00edst\u011b. To je ide\u00e1ln\u00ed zp\u016fsob, jak si rychle porovnat v\u00fdsledky a naj\u00edt ten, kter\u00fd nejv\u00edce odpov\u00edd\u00e1 va\u0161im p\u0159edstav\u00e1m.\u00a0\n <\/div>\n <\/strong>\n<\/div>\n\n\n\n

Praktick\u00e9 vyu\u017eit\u00ed Imagen 4<\/h2>\n\n\n\n

Imagen 4 nen\u00ed jen uk\u00e1zkou pokro\u010dil\u00e9 technologie<\/a>, je to praktick\u00fd n\u00e1stroj pro \u0159e\u0161en\u00ed sou\u010dasn\u00fdch tv\u016fr\u010d\u00edch v\u00fdzev.<\/strong> Jeho nejv\u011bt\u0161\u00ed p\u0159ednost\u00ed<\/strong> je schopnost detailn\u011b porozum\u011bt zad\u00e1n\u00ed a p\u0159ev\u00e1d\u011bt i slo\u017eit\u00e9 textov\u00e9 popisy do p\u0159esv\u011bd\u010div\u00fdch vizu\u00e1l\u016f. Co to ale znamen\u00e1 v praxi? <\/p>\n\n\n\n

V marketingu<\/a> a reklam\u011b<\/strong> dok\u00e1\u017ee b\u011bhem okam\u017eiku generovat fotorealistick\u00e9 vizualizace produkt\u016f, moodboardy nebo koncepty kampan\u00ed. Grafici a tv\u016frci obsahu ho vyu\u017e\u00edvaj\u00ed k rychl\u00e9mu prototypov\u00e1n\u00ed n\u00e1pad\u016f, testov\u00e1n\u00ed r\u016fzn\u00fdch styl\u016f a generov\u00e1n\u00ed alternativn\u00edch \u0159e\u0161en\u00ed<\/strong>. Pro e-commerce je to skv\u011bl\u00fd pomocn\u00edk, kter\u00fd um\u00ed vytvo\u0159it profesion\u00e1ln\u011b vypadaj\u00edc\u00ed bannery, produktov\u00e9 fotografie nebo obsah pro soci\u00e1ln\u00ed s\u00edt\u011b<\/strong>, ani\u017e by bylo nutn\u00e9 cokoli slo\u017eit\u011b fotit nebo upravovat.<\/p>\n\n\n\n

Prompt:<\/strong> Fotorealistick\u00e1 produktov\u00e1 fotografie eko-friendly parf\u00e9mu. Elegantn\u00ed lahvi\u010dka z matn\u00e9ho skla na d\u0159ev\u011bn\u00e9m stole, obklopen\u00e1 levandul\u00ed a citrusy. Jemn\u00e9 rann\u00ed sv\u011btlo, m\u011bkk\u00e9 st\u00edny, minimalistick\u00e9 pozad\u00ed.<\/em><\/p>\n\n\n\n

\"Produktova
Zdroj: OCTODEEP<\/a>
Produktov\u00e1 fotografie vygenerovan\u00e1 v Imagen 4.<\/figcaption><\/figure>\n\n\n\n

Ilustr\u00e1to\u0159i a design\u00e9\u0159i<\/strong> v n\u011bm najdou spolehliv\u00e9ho asistenta pro tvorbu koncept art\u016f, stylizovan\u00fdch postav nebo sc\u00e9n, kter\u00e9 by tradi\u010dn\u011b vy\u017eadovaly n\u00e1ro\u010dn\u00e9 3D modelov\u00e1n\u00ed. <\/p>\n\n\n\n

Prompt:<\/strong> Stylizovan\u00fd fashion editorial focen\u00fd v pa\u0159\u00ed\u017esk\u00fdch ulic\u00edch \u2013 modelka v b\u00e9\u017eov\u00e9m tren\u010dkotu, slune\u010dn\u00ed br\u00fdle, kav\u00e1rna v pozad\u00ed. Styl: editorial Vogue, tepl\u00e9 pastelov\u00e9 t\u00f3ny, jemn\u00e9 zrno jako z analogov\u00e9ho filmu.<\/em><\/p>\n\n\n\n

\"Obr\u00e1zek<\/a>
Zdroj: OCTODEEP<\/a>
Obr\u00e1zek vygenerovan\u00fd v modelu Imagen 4. <\/figcaption><\/figure>\n\n\n\n

Imagen dok\u00e1\u017ee vizualizovat i abstraktn\u00ed t\u00e9mata, co\u017e ocen\u00ed nap\u0159\u00edklad pracovn\u00edci ve \u0161kolstv\u00ed<\/a> nebo populariz\u00e1to\u0159i v\u011bdy<\/strong>. M\u016f\u017ee zn\u00e1zor\u0148ovat slo\u017eit\u00e9 jevy, historick\u00e9 ud\u00e1losti nebo futuristick\u00e9 vize, kter\u00e9 by jinak bylo obt\u00ed\u017en\u00e9 p\u0159edstavit.<\/p>\n\n\n\n

 Prompt: <\/strong>Re\u00e1ln\u00e1 ilustrace bitvy u Hastingsu v roce 1066. Norman\u0161t\u00ed ryt\u00ed\u0159i na kon\u00edch, anglosas\u0161t\u00ed bojovn\u00edci se \u0161t\u00edty, prach a zmatek boje. Styl: historicky v\u011brn\u00e1 malba, m\u00edrn\u011b dramatick\u00e9 sv\u011btlo, ilustrace u\u010debnice.<\/em><\/p>\n\n\n\n

Hlavn\u00ed v\u00fdhoda<\/a>?<\/strong> \u0160et\u0159\u00ed \u010das, roz\u0161i\u0159uje kreativn\u00ed mo\u017enosti a umo\u017e\u0148uje rychle p\u0159ev\u00e1d\u011bt i ty nejslo\u017eit\u011bj\u0161\u00ed n\u00e1pady do vizu\u00e1ln\u00ed podoby. A\u0165 u\u017e jste grafik, market\u00e9r, ilustr\u00e1tor nebo u\u010ditel, Imagen v\u00e1m m\u016f\u017ee v\u00fdrazn\u011b zjednodu\u0161it pr\u00e1ci a otev\u0159\u00edt nov\u00e9 mo\u017enosti tvorby.<\/p>\n\n\n\n

V\u0161echny funkce Imagenu 4 a mnoho dal\u0161\u00edch funkc\u00ed, si m\u016f\u017eete vyzkou\u0161et v aplikaci OCTODEEP ji\u017e ve verzi STARTER<\/strong><\/a> za 97,- m\u011bs\u00ed\u010dn\u011b<\/strong>.<\/p>\n\n\n\n

\n
Vyzkou\u0161ejte aplikaci OCTODEEP ZDARMA<\/a><\/div>\n<\/div>\n\n\n\n

Aktualizov\u00e1no dne: 8. 7. 2025<\/p>\n\n\n\n

Zdroje: <\/p>\n\n\n\n

AI gener\u00e1tor obr\u00e1zk\u016f<\/a> v Gemini \u2013 obr\u00e1zek z textu pomoc\u00ed modelu Imagen 4 [online]. [cit. 08. 07. 2025]. Dostupn\u00e9 z: https:\/\/gemini.google\/overview\/image-generation\/?hl=cs<\/a><\/p>\n\n\n\n

Google says its new image AI can actually spell | The Verge [online]. [cit. 08. 07. 2025]. Dostupn\u00e9 z: https:\/\/www.theverge.com\/news\/670364\/google-imagen-4-image-generation-spell-io-2025<\/a><\/p>\n\n\n\n

DigitalOcean [online]. [cit. 08. 07. 2025]. Dostupn\u00e9 z: https:\/\/www.digitalocean.com\/community\/conceptual-articles\/imagen4<\/a><\/p>\n\n\n\n

OpenAI \u2013 DALL\u00b7E 3 [online]. [cit. 08. 07. 2025]. Dostupn\u00e9 z: https:\/\/openai.com\/dall-e<\/a><\/p>\n\n\n\n

Stability AI – Stable Diffusion XL [online]. [cit. 08. 07. 2025]. Dostupn\u00e9 z: https:\/\/stability.ai\/news\/stable-diffusion<\/a><\/p>\n\n\n\n

Google DeepMind – Gemini 1.5 [online]. [cit. 08. 07. 2025]. Dostupn\u00e9 z: https:\/\/deepmind.google\/technologies\/gemini\/<\/a><\/p>\n\n\n\n

Introducing 4o Image Generation [online]. [cit. 08. 07. 2025]. Dostupn\u00e9 z: https:\/\/openai.com\/index\/introducing-4o-image-generation\/<\/a><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Nach\u00e1z\u00edme se v dob\u011b, kdy k vytvo\u0159en\u00ed p\u016fsobiv\u00e9ho vizu\u00e1lu nepot\u0159ebujeme nic jin\u00e9ho ne\u017e my\u0161lenku a dob\u0159e formulovan\u00fd prompt. Generativn\u00ed um\u011bl\u00e1 inteligence m\u011bn\u00ed sv\u011bt vizu\u00e1ln\u00ed tvorby stejn\u011b radik\u00e1ln\u011b, jako kdysi fotografie nahradila malbu v portr\u00e9tn\u00ed tvorb\u011b. A pr\u00e1v\u011b Imagen 4 od Google DeepMind je jedn\u00edm z nejpokro\u010dilej\u0161\u00edch model\u016f, kter\u00e9 sv\u011bt AI vizu\u00e1ln\u00ed tvorby m\u016f\u017ee nab\u00eddnout.  Imagen […]<\/p>\n","protected":false},"author":1,"featured_media":3029,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[18],"tags":[],"class_list":["post-3001","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jazykove-modely"],"yoast_head":"\nNov\u00e1 \u00farove\u0148 kvality a p\u0159esnosti AI obr\u00e1zk\u016f s Imagen 4 | OCTODEEP.COM<\/title>\n<meta name=\"description\" content=\"Nov\u00e1 \u00farove\u0148 kvality a p\u0159esnosti AI obr\u00e1zk\u016f s Imagen 4 \u2714\ufe0f Seznamte se s Imagen 4\u00a0od Google DeepMind. \u2714\ufe0f Co um\u00ed Imagen 4. \u2714\ufe0f V \u010dem Imagen 4 od Googlu vynik\u00e1? \u2714\ufe0f Praktick\u00e9 vyu\u017eit\u00ed Imagen 4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/octodeep.com\/blog\/nova-uroven-kvality-a-presnosti-ai-obrazku-s-imagen-4\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nov\u00e1 \u00farove\u0148 kvality a p\u0159esnosti AI obr\u00e1zk\u016f s Imagen 4 | OCTODEEP.COM\" \/>\n<meta property=\"og:description\" content=\"Nov\u00e1 \u00farove\u0148 kvality a p\u0159esnosti AI obr\u00e1zk\u016f s Imagen 4 \u2714\ufe0f Seznamte se s Imagen 4\u00a0od Google DeepMind. \u2714\ufe0f Co um\u00ed Imagen 4. \u2714\ufe0f V \u010dem Imagen 4 od Googlu vynik\u00e1? 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